./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f02c38ef7caa0913e815c21ae4fcfcf6b07193a4f02fe1bf68067d0ca7ac604d --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:41:45,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:41:45,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:41:45,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:41:45,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:41:45,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:41:45,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:41:45,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:41:45,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:41:45,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:41:45,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:41:45,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:41:45,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:41:45,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:41:45,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:41:45,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:41:45,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:41:45,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:41:45,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:41:45,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:41:45,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:41:45,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:41:45,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:41:45,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:41:45,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:41:45,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:41:45,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:41:45,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:41:45,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:41:45,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:41:45,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:41:45,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:41:45,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:41:45,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:41:45,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:41:45,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:41:45,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:41:45,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:41:45,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:41:45,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:41:45,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:41:45,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:41:45,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:41:45,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:41:45,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:41:45,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:41:45,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:41:45,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:41:45,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:41:45,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:41:45,292 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:41:45,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:41:45,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:41:45,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:41:45,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:41:45,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:41:45,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:41:45,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:41:45,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:41:45,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:41:45,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:41:45,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:41:45,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:41:45,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:41:45,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:41:45,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:41:45,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:41:45,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:41:45,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:41:45,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:41:45,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02c38ef7caa0913e815c21ae4fcfcf6b07193a4f02fe1bf68067d0ca7ac604d [2021-12-14 15:41:45,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:41:45,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:41:45,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:41:45,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:41:45,522 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:41:45,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c [2021-12-14 15:41:45,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d895d9640/abaf6973fd4e4c69919514af65bf0f5b/FLAG809d7c8c6 [2021-12-14 15:41:46,219 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:41:46,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c [2021-12-14 15:41:46,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d895d9640/abaf6973fd4e4c69919514af65bf0f5b/FLAG809d7c8c6 [2021-12-14 15:41:46,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d895d9640/abaf6973fd4e4c69919514af65bf0f5b [2021-12-14 15:41:46,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:41:46,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:41:46,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:41:46,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:41:46,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:41:46,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:46" (1/1) ... [2021-12-14 15:41:46,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ee0c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:46, skipping insertion in model container [2021-12-14 15:41:46,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:46" (1/1) ... [2021-12-14 15:41:46,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:41:46,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:41:47,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[381679,381692] [2021-12-14 15:41:47,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[383339,383352] [2021-12-14 15:41:48,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:41:48,040 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:41:48,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[381679,381692] [2021-12-14 15:41:48,613 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[383339,383352] [2021-12-14 15:41:48,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:41:48,684 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:41:48,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48 WrapperNode [2021-12-14 15:41:48,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:41:48,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:41:48,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:41:48,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:41:48,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:48,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,091 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2021-12-14 15:41:49,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:41:49,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:41:49,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:41:49,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:41:49,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:41:49,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:41:49,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:41:49,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:41:49,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (1/1) ... [2021-12-14 15:41:49,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:41:49,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:41:49,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:41:49,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:41:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:41:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:41:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:41:49,772 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:41:49,773 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:41:54,609 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:41:54,630 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:41:54,631 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-14 15:41:54,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:54 BoogieIcfgContainer [2021-12-14 15:41:54,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:41:54,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:41:54,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:41:54,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:41:54,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:41:46" (1/3) ... [2021-12-14 15:41:54,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127fefd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:54, skipping insertion in model container [2021-12-14 15:41:54,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:48" (2/3) ... [2021-12-14 15:41:54,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127fefd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:54, skipping insertion in model container [2021-12-14 15:41:54,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:54" (3/3) ... [2021-12-14 15:41:54,641 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.11.cil-2.c [2021-12-14 15:41:54,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:41:54,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:41:54,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:41:54,694 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:41:54,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:41:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:41:54,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:41:54,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:54,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:41:54,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2021-12-14 15:41:54,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:54,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619877277] [2021-12-14 15:41:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:54,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:41:55,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:55,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619877277] [2021-12-14 15:41:55,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619877277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:55,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:55,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:41:55,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093364671] [2021-12-14 15:41:55,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:55,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:41:55,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:55,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:41:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:41:55,139 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:41:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:41:56,298 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2021-12-14 15:41:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:41:56,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:41:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:41:56,317 INFO L225 Difference]: With dead ends: 5199 [2021-12-14 15:41:56,318 INFO L226 Difference]: Without dead ends: 2604 [2021-12-14 15:41:56,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:41:56,327 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17095 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:41:56,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 17095 Invalid, 709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:41:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-12-14 15:41:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2021-12-14 15:41:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:41:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2021-12-14 15:41:56,431 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2021-12-14 15:41:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:41:56,432 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2021-12-14 15:41:56,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:41:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2021-12-14 15:41:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:41:56,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:56,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:41:56,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:41:56,437 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2021-12-14 15:41:56,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:56,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340034036] [2021-12-14 15:41:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:56,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:41:56,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:56,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340034036] [2021-12-14 15:41:56,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340034036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:56,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:56,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:41:56,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961861450] [2021-12-14 15:41:56,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:56,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:41:56,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:41:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:41:56,682 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:41:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:41:59,180 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2021-12-14 15:41:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:41:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:41:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:41:59,192 INFO L225 Difference]: With dead ends: 3417 [2021-12-14 15:41:59,192 INFO L226 Difference]: Without dead ends: 3084 [2021-12-14 15:41:59,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:41:59,196 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17430 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:41:59,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5413 Valid, 17430 Invalid, 1922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:41:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-12-14 15:41:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2021-12-14 15:41:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:41:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2021-12-14 15:41:59,269 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2021-12-14 15:41:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:41:59,269 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2021-12-14 15:41:59,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:41:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2021-12-14 15:41:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:41:59,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:59,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:41:59,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:41:59,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2021-12-14 15:41:59,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:59,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158627797] [2021-12-14 15:41:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:59,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:59,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:41:59,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:59,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158627797] [2021-12-14 15:41:59,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158627797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:59,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:59,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:41:59,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112193795] [2021-12-14 15:41:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:59,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:41:59,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:41:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:41:59,451 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:00,973 INFO L93 Difference]: Finished difference Result 3787 states and 6636 transitions. [2021-12-14 15:42:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:42:00,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:00,984 INFO L225 Difference]: With dead ends: 3787 [2021-12-14 15:42:00,985 INFO L226 Difference]: Without dead ends: 3104 [2021-12-14 15:42:00,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:42:00,988 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 4992 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5011 SdHoareTripleChecker+Valid, 21264 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:00,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5011 Valid, 21264 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:42:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-12-14 15:42:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2823. [2021-12-14 15:42:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8002171552660151) internal successors, (4974), 2766 states have internal predecessors, (4974), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:42:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5067 transitions. [2021-12-14 15:42:01,053 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5067 transitions. Word has length 167 [2021-12-14 15:42:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:01,053 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5067 transitions. [2021-12-14 15:42:01,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5067 transitions. [2021-12-14 15:42:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:01,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:01,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:01,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:42:01,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2021-12-14 15:42:01,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:01,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842384941] [2021-12-14 15:42:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:01,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:01,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:01,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842384941] [2021-12-14 15:42:01,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842384941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:01,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:01,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:01,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334442809] [2021-12-14 15:42:01,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:01,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:01,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:01,186 INFO L87 Difference]: Start difference. First operand 2823 states and 5067 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:03,878 INFO L93 Difference]: Finished difference Result 4261 states and 7389 transitions. [2021-12-14 15:42:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:03,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:03,891 INFO L225 Difference]: With dead ends: 4261 [2021-12-14 15:42:03,891 INFO L226 Difference]: Without dead ends: 3578 [2021-12-14 15:42:03,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:03,905 INFO L933 BasicCegarLoop]: 4889 mSDtfsCounter, 5411 mSDsluCounter, 17640 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 22529 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:03,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 22529 Invalid, 2902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:42:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-12-14 15:42:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3148. [2021-12-14 15:42:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7765436131983012) internal successors, (5438), 3065 states have internal predecessors, (5438), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-14 15:42:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5573 transitions. [2021-12-14 15:42:04,030 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5573 transitions. Word has length 167 [2021-12-14 15:42:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:04,031 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 5573 transitions. [2021-12-14 15:42:04,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5573 transitions. [2021-12-14 15:42:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:04,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:04,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:04,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:42:04,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2021-12-14 15:42:04,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:04,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430503089] [2021-12-14 15:42:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:04,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:04,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430503089] [2021-12-14 15:42:04,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430503089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:04,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:04,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:04,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985307562] [2021-12-14 15:42:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:04,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:04,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:04,181 INFO L87 Difference]: Start difference. First operand 3148 states and 5573 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:06,949 INFO L93 Difference]: Finished difference Result 5508 states and 9375 transitions. [2021-12-14 15:42:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:06,966 INFO L225 Difference]: With dead ends: 5508 [2021-12-14 15:42:06,966 INFO L226 Difference]: Without dead ends: 4500 [2021-12-14 15:42:06,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:06,971 INFO L933 BasicCegarLoop]: 4881 mSDtfsCounter, 5408 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22517 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:06,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5426 Valid, 22517 Invalid, 2903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:42:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-12-14 15:42:07,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 3800. [2021-12-14 15:42:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3659 states have (on average 1.7406395189942607) internal successors, (6369), 3665 states have internal predecessors, (6369), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-14 15:42:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 6592 transitions. [2021-12-14 15:42:07,081 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 6592 transitions. Word has length 167 [2021-12-14 15:42:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:07,083 INFO L470 AbstractCegarLoop]: Abstraction has 3800 states and 6592 transitions. [2021-12-14 15:42:07,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 6592 transitions. [2021-12-14 15:42:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:07,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:07,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:07,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:42:07,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:07,086 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2021-12-14 15:42:07,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:07,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227027454] [2021-12-14 15:42:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:07,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:07,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:07,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227027454] [2021-12-14 15:42:07,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227027454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:07,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:07,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:07,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786059428] [2021-12-14 15:42:07,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:07,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:07,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:07,221 INFO L87 Difference]: Start difference. First operand 3800 states and 6592 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:09,917 INFO L93 Difference]: Finished difference Result 7910 states and 13178 transitions. [2021-12-14 15:42:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:09,945 INFO L225 Difference]: With dead ends: 7910 [2021-12-14 15:42:09,945 INFO L226 Difference]: Without dead ends: 6250 [2021-12-14 15:42:09,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:09,955 INFO L933 BasicCegarLoop]: 4877 mSDtfsCounter, 5404 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 22513 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:09,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5422 Valid, 22513 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:42:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2021-12-14 15:42:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5106. [2021-12-14 15:42:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.6950792670372659) internal successors, (8233), 4867 states have internal predecessors, (8233), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:42:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8638 transitions. [2021-12-14 15:42:10,237 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8638 transitions. Word has length 167 [2021-12-14 15:42:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:10,237 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8638 transitions. [2021-12-14 15:42:10,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8638 transitions. [2021-12-14 15:42:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:10,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:10,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:10,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:42:10,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:10,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2021-12-14 15:42:10,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:10,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915135520] [2021-12-14 15:42:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:10,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:10,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:10,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915135520] [2021-12-14 15:42:10,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915135520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:10,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:10,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:10,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865023662] [2021-12-14 15:42:10,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:10,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:10,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:10,363 INFO L87 Difference]: Start difference. First operand 5106 states and 8638 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:11,586 INFO L93 Difference]: Finished difference Result 9244 states and 15305 transitions. [2021-12-14 15:42:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:42:11,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:11,605 INFO L225 Difference]: With dead ends: 9244 [2021-12-14 15:42:11,605 INFO L226 Difference]: Without dead ends: 6278 [2021-12-14 15:42:11,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:42:11,613 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 5150 mSDsluCounter, 12561 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 17107 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:11,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 17107 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:42:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-12-14 15:42:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 5106. [2021-12-14 15:42:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.6932262713609223) internal successors, (8224), 4867 states have internal predecessors, (8224), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:42:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8629 transitions. [2021-12-14 15:42:11,771 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8629 transitions. Word has length 167 [2021-12-14 15:42:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:11,771 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8629 transitions. [2021-12-14 15:42:11,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:11,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8629 transitions. [2021-12-14 15:42:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:11,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:11,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:11,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:42:11,774 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:11,775 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2021-12-14 15:42:11,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:11,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091642679] [2021-12-14 15:42:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:11,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:11,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:11,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091642679] [2021-12-14 15:42:11,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091642679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:11,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:11,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:11,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722239413] [2021-12-14 15:42:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:11,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:11,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:11,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:11,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:11,889 INFO L87 Difference]: Start difference. First operand 5106 states and 8629 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:13,105 INFO L93 Difference]: Finished difference Result 9224 states and 15239 transitions. [2021-12-14 15:42:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:42:13,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:13,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:13,120 INFO L225 Difference]: With dead ends: 9224 [2021-12-14 15:42:13,120 INFO L226 Difference]: Without dead ends: 6258 [2021-12-14 15:42:13,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:42:13,128 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 5146 mSDsluCounter, 12561 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 17101 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:13,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5165 Valid, 17101 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:42:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-12-14 15:42:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 5106. [2021-12-14 15:42:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.691373275684579) internal successors, (8215), 4867 states have internal predecessors, (8215), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:42:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8620 transitions. [2021-12-14 15:42:13,302 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8620 transitions. Word has length 167 [2021-12-14 15:42:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8620 transitions. [2021-12-14 15:42:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8620 transitions. [2021-12-14 15:42:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:13,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:13,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:13,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:42:13,307 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2021-12-14 15:42:13,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:13,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595742067] [2021-12-14 15:42:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:13,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:13,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595742067] [2021-12-14 15:42:13,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595742067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:13,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:13,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:13,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458140664] [2021-12-14 15:42:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:13,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:13,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:13,437 INFO L87 Difference]: Start difference. First operand 5106 states and 8620 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:16,435 INFO L93 Difference]: Finished difference Result 12684 states and 20658 transitions. [2021-12-14 15:42:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:16,460 INFO L225 Difference]: With dead ends: 12684 [2021-12-14 15:42:16,461 INFO L226 Difference]: Without dead ends: 9718 [2021-12-14 15:42:16,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:16,471 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 5387 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5405 SdHoareTripleChecker+Valid, 22491 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:16,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5405 Valid, 22491 Invalid, 2842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:42:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9718 states. [2021-12-14 15:42:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9718 to 7750. [2021-12-14 15:42:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7285 states have (on average 1.6433768016472203) internal successors, (11972), 7303 states have internal predecessors, (11972), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-12-14 15:42:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 12759 transitions. [2021-12-14 15:42:16,762 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 12759 transitions. Word has length 167 [2021-12-14 15:42:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:16,763 INFO L470 AbstractCegarLoop]: Abstraction has 7750 states and 12759 transitions. [2021-12-14 15:42:16,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 12759 transitions. [2021-12-14 15:42:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:16,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:16,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:16,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:42:16,767 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2021-12-14 15:42:16,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:16,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896033336] [2021-12-14 15:42:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:16,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:16,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:16,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896033336] [2021-12-14 15:42:16,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896033336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:16,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:16,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:16,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685405437] [2021-12-14 15:42:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:16,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:16,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:16,873 INFO L87 Difference]: Start difference. First operand 7750 states and 12759 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:20,092 INFO L93 Difference]: Finished difference Result 22294 states and 35877 transitions. [2021-12-14 15:42:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:20,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:20,137 INFO L225 Difference]: With dead ends: 22294 [2021-12-14 15:42:20,137 INFO L226 Difference]: Without dead ends: 16684 [2021-12-14 15:42:20,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:20,155 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 5386 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5404 SdHoareTripleChecker+Valid, 22486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:20,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5404 Valid, 22486 Invalid, 2834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:42:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16684 states. [2021-12-14 15:42:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16684 to 13047. [2021-12-14 15:42:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13047 states, 12150 states have (on average 1.6046090534979425) internal successors, (19496), 12184 states have internal predecessors, (19496), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-14 15:42:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13047 states to 13047 states and 21101 transitions. [2021-12-14 15:42:20,792 INFO L78 Accepts]: Start accepts. Automaton has 13047 states and 21101 transitions. Word has length 167 [2021-12-14 15:42:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:20,792 INFO L470 AbstractCegarLoop]: Abstraction has 13047 states and 21101 transitions. [2021-12-14 15:42:20,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 13047 states and 21101 transitions. [2021-12-14 15:42:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:20,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:20,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:20,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:42:20,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:20,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2021-12-14 15:42:20,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267094631] [2021-12-14 15:42:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:20,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:20,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267094631] [2021-12-14 15:42:20,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267094631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:20,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:20,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:20,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824782555] [2021-12-14 15:42:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:20,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:20,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:20,924 INFO L87 Difference]: Start difference. First operand 13047 states and 21101 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:24,858 INFO L93 Difference]: Finished difference Result 41509 states and 66497 transitions. [2021-12-14 15:42:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:24,950 INFO L225 Difference]: With dead ends: 41509 [2021-12-14 15:42:24,950 INFO L226 Difference]: Without dead ends: 30602 [2021-12-14 15:42:24,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:24,987 INFO L933 BasicCegarLoop]: 4845 mSDtfsCounter, 5385 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5403 SdHoareTripleChecker+Valid, 22481 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:24,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5403 Valid, 22481 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:42:25,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30602 states. [2021-12-14 15:42:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30602 to 23672. [2021-12-14 15:42:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23672 states, 21911 states have (on average 1.5786591209894574) internal successors, (34590), 21977 states have internal predecessors, (34590), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-14 15:42:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 37993 transitions. [2021-12-14 15:42:26,319 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 37993 transitions. Word has length 167 [2021-12-14 15:42:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:26,319 INFO L470 AbstractCegarLoop]: Abstraction has 23672 states and 37993 transitions. [2021-12-14 15:42:26,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 37993 transitions. [2021-12-14 15:42:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:26,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:26,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:26,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:42:26,330 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:26,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2021-12-14 15:42:26,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:26,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202614025] [2021-12-14 15:42:26,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:26,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:26,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:26,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202614025] [2021-12-14 15:42:26,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202614025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:26,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:26,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:26,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121081639] [2021-12-14 15:42:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:26,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:26,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:26,454 INFO L87 Difference]: Start difference. First operand 23672 states and 37993 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:31,779 INFO L93 Difference]: Finished difference Result 79940 states and 128339 transitions. [2021-12-14 15:42:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:42:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:31,975 INFO L225 Difference]: With dead ends: 79940 [2021-12-14 15:42:31,975 INFO L226 Difference]: Without dead ends: 58408 [2021-12-14 15:42:32,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:32,129 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5384 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5402 SdHoareTripleChecker+Valid, 22476 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:32,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5402 Valid, 22476 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:42:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58408 states. [2021-12-14 15:42:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58408 to 44985. [2021-12-14 15:42:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44985 states, 41496 states have (on average 1.5633314054366685) internal successors, (64872), 41626 states have internal predecessors, (64872), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2021-12-14 15:42:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44985 states to 44985 states and 72357 transitions. [2021-12-14 15:42:34,489 INFO L78 Accepts]: Start accepts. Automaton has 44985 states and 72357 transitions. Word has length 167 [2021-12-14 15:42:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:34,489 INFO L470 AbstractCegarLoop]: Abstraction has 44985 states and 72357 transitions. [2021-12-14 15:42:34,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 44985 states and 72357 transitions. [2021-12-14 15:42:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:42:34,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:34,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:34,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:42:34,509 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2021-12-14 15:42:34,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:34,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403818146] [2021-12-14 15:42:34,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:34,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:34,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:34,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:34,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:34,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403818146] [2021-12-14 15:42:34,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403818146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:34,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:34,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:34,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566803797] [2021-12-14 15:42:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:34,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:34,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:34,607 INFO L87 Difference]: Start difference. First operand 44985 states and 72357 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)